I'm running Parallels Desktop 7 on OSX Lion and encounter the issue in the subject on every time I'm trying to launch Parallels VM. The error message contains a hint to restore to network configuration default which does not help. As been advised by some forums to ran the following script:

sudo kextutil "/Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_hypervisor.kext"
sudo kextutil "/Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_hid_hook.kext"
sudo kextutil "/Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_usb_connect.kext"
sudo kextutil "/Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_netbridge.kext"
sudo kextutil "/Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_vnic.kext"

The output of:

sudo kextutil "/Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_netbridge.kext"

is:

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Diagnostics for /Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_netbridge.kext: Warnings: The booter does not recognize symbolic links; confirm these files/directories aren't needed for startup: /Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_netbridge.kext/Contents/CodeDirectory /Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_netbridge.kext/Contents/CodeRequirements /Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_netbridge.kext/Contents/CodeResources /Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/prl_netbridge.kext/Contents/CodeSignature

Dependency Resolution Failures: No kexts found for these libraries: com.parallels.kext.prl_hypervisor

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I've noticed that prl_netbridge is not being loaded (when I'm trying to unload it, I'm notified it is not loaded).

Am I doing something wrong? What can be the reason for such behaviour?